63/89 Device handbook A
PLUS
with / without LED display
,
157
679-19, 04/2016
Measurement
pr
es
e
nt
m
ax
m
in
1L
2L
3Lb
3Lu
3Lu.
A
4Lb
4Lu.
O
4Lu
Power factor PF
●
√ √ √ √ √ √ √ √
Power factor PF1
●
√
√ √
Power factor PF2
●
√
√ √
Power factor PF3
●
√ √
PF incoming inductive
● √ √ √ √ √ √ √ √
PF incoming capacitive
● √ √ √ √ √ √ √ √
PF outgoing inductive
● √ √ √ √ √ √ √ √
PF outgoing capacitive
● √ √ √ √ √ √ √ √
Reactive power factor QF
●
√ √ √ √ √ √ √ √
Reactive power factor QF1
●
√
√ √
Reactive power factor QF2
●
√
√ √
Reactive power factor QF3
●
√ √
Load factor LF
●
√ √ √ √ √ √ √ √
Load factor LF1
●
√
√ √
Load factor LF2
●
√
√ √
Load factor LF3
●
√ √
U
mean
=(U1N+U2N)/2
●
√
U
mean
=(U1N+U2N+U3N)/3
●
√ √
U
mean
=(U12+U23+U31)/3
●
√ √
I
mean
=(I1+I2)/2
●
√
I
mean
=(I1+I2+I3)/3
●
√ √
√ √
Phase angle between U1 and U2
●
√ √ √
√ √
Phase angle between U2 and U3
●
√ √ √
√ √
Phase angle between U3 and U1
●
√ √ √
√ √
Maximum
ΔU <> Um
1)
● ●
√ √ √
√
Maximum
ΔI <> Im
2)
● ●
√
√ √
IMS, Average current with sign of P
●
√ √
√ √
1)
maximum deviation from the mean value of all voltages (
see A3
)
2)
maximum deviation from the mean value of all currents (
see A3
)
Power factors
The
power factor PF
gives the relation
between active and apparent power. If
there are no harmonics present in the
system, it corresponds to the
cosφ (see
also
Reactive power
). The PF has a
range of -1...0...+1, where the sign gives
the direction of energy flow.
The
load factor LF
is a quantity derived
from the PF, which allows making a
statement about the load type. Only this
way it's possible to measure a range like
0.5 capacitive ... 1 ... 0.5 inductive in a
non-ambiguous way.
The
reactive power factor QF
gives the
relation between reactive and apparent
power.